Rendering a 2d spritesheet for a game

I need to set the scene automatically, so it renders 3 passes - one for each camera (front,back and side). So basically a render of an animation sequence (png files) from 3 cameras.

I looked for a way to set a camera at the render passes, couldnt find it.
I looked for a way to set it up with nodes- couldnt figure it out.

How do I set blender so it renders all 3 cameras in the scene to three render passes.

Is there a way? A plugin perhaps??

So this is three cameras, each renders one frame, right? Markers, Cameras, Animation…
http://wiki.blender.org/index.php/Doc:2.6/Manual/Animation/Basics/Markers